US5597130A - Tape winding linkage of drum type magnetic recording and reproducing apparatus - Google Patents
Tape winding linkage of drum type magnetic recording and reproducing apparatus Download PDFInfo
- Publication number
- US5597130A US5597130A US08/493,291 US49329195A US5597130A US 5597130 A US5597130 A US 5597130A US 49329195 A US49329195 A US 49329195A US 5597130 A US5597130 A US 5597130A
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- United States
- Prior art keywords
- link
- tape winding
- tape
- deck
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/60—Guiding record carrier
- G11B15/66—Threading; Loading; Automatic self-loading
- G11B15/665—Threading; Loading; Automatic self-loading by extracting loop of record carrier from container
- G11B15/6653—Threading; Loading; Automatic self-loading by extracting loop of record carrier from container to pull the record carrier against drum
- G11B15/6656—Threading; Loading; Automatic self-loading by extracting loop of record carrier from container to pull the record carrier against drum using two-sided extraction, i.e. "M-type"
Definitions
- the present invention is related to a tape winding linkage of drum type magnetic recording and reproducing apparatus that can simplify the transmission element mechanism, lower the cost and make it easy to assemble.
- the prior art's winding linkage of drum type magnetic recording and reproducing apparatus has all the links, i.e. the first. second and third links being two-joint links.
- a tape winding torsion spring is attached in between the first link and the tape winding gear such that one end of the torsion spring connects to the tape winding gear and the other end tightly presses against the first link after being preloaded.
- the inclined pole base moves along the deck's slot at the tape winding and tape unwinding positions, thereby to divert the tape out of the cassette and wind around the magnetic drum.
- this kind of structure requires relatively more elements which make the assembling procedure very complicated and therefore is inconvenient, Besides, it needs a lot more spaces.
- the main purpose of the invention is to provide a kind of tape winding linkage of drum type magnetic recording and reproducing apparatus wherein the tape winding torsion spring between the tape winding gear and the first link is removed to simplify the machine members and assembling work.
- the third link having spring effect, is a two-joint link. It is driven by tape winding gear through the first and the second link and it then compresses the third link to produce reacting force which in sequence, transmits the force to the inclined pole base, thus produces a force to press against the V-slot.
- the next purpose of the invention is to disclose a kind of tape winding linkage of drum type magnetic recording and reproducing apparatus wherein the second link can be substituted by a buckling link to make the inclined pole base produce force to press against the drum base by use of the spring action of the second link, thereby to replace the traditional torsion spring action of tape winding.
- the other purpose of the present invention is to provide an integral tape winding linkage comprising the first link and tape winding gear to further lower the cost and make the assembling work much easier.
- FIG. 1 is the general layout of the traditional tape winding linkage
- FIGS. 2(a) and 2(b) are the assembled structure of the traditional tape winding linkage
- FIG. 3 is the schematic diagram at the tape unwinding position of the traditional tape winding linkage
- FIG. 4 is the schematic diagram at the tape winding position of the traditional tape winding linkage
- FIGS. 5(a)-(c) are the schematic structural diagram of the third link of the present invention.
- FIG. 6 is the schematic diagram at the tape unwinding position of the embodiment example 1 of the present invention.
- FIG. 7 is the schematic diagram at the tape winding position of the embodiment example 1 of the present invention.
- FIG. 8 is the schematic diagram at the tape unwinding position of the embodiment example 2 of the present invention.
- FIG. 9 is the schematic diagram at the tape winding position of the embodiment example 2 of the present invention.
- FIG. 10 is the schematic diagram at the tape unwinding position of the embodiment example 3 of the present invention.
- FIG. 11 is the schematic diagram at the tape winding position of the embodiment example 3 of the present invention.
- FIG. 12 is the schematic diagram at the tape winding position of the embodiment example 4 of the present invention.
- the tape winding links are divided into two parts installed on the deck 10 wherein a tape winding torsion spring 111 is installed between the first link 20 and tape winding gear 11.
- the tape winding torsion spring 111 has one of its end connected to the tape winding gear 11 and its other end pressed tightly against the first link 20 after being preloaded.
- the second link 202 is connected to the first link 20 by the first pivot joint 201 and is connected to the third link 204 by the second pivot joint 203.
- the third link 204 is connected to the inclined pole base 30 by the third pivot joint 205, furthermore, the third pivot joint 205, the inclined pole base guided pin 302 on its inclined pole base 30 as well as the second pivot joint 203 are all embedded in the deck's guided slot 101.
- the inclined pole base 30 on both the left and right hand sides moves along the deck's guided slot 101 at the tape unwinding and tape winding positions (as shown in FIG. 3 and FIG. 4) when the motor 50 drives the gear train 501 to rotate the tape winding gear 11 and tape winding linkage of both the left and right hand sides', thereby, divert the tape 304 out of the cassette 305 and wind around the drum 303 by use of its inclined pole 301.
- the guided wheel positioner 306 up touches the inclined pole base positioner 307 of the drum base 100 which make the inclined pole base 30 and linkage subject to be constrained and stop moving, in the same time, the tape winding gear 11 keeps on rotating a angle ⁇ to drive the tape winding torsion spring 111 to increase torsional amount which make the inclined pole base 30 press tightly against the drum base 100.
- the portion of tape winding gear 11 comprises three layers of structure in the traditional tape winding linkage, thereby, when it comes to assembling, one must follows the procedures as shown belows:
- FIGS. 5A, 5B and 5C are the schematic structural diagram of the third link of the present invention, as shown in portion (a), it is a buckling type two-joint link 406, having spring effect and portion (b) is a torsion type two-joint link 407 having spring effect also, while portion (c) is a compression type two-joint link 408 to replace the traditional third link.
- any one of the above mentioned two-joint link having spring effect is subjected to deformation, it will produce a reacting force which in sequence, will transmit to the inclined pole base 30 making the inclined pole base create a force to press tightly against the V-slot (the magnitude of the tight-press force can be obtained directly from the design of the spring link's dimension) and the above mentioned two-joint link having spring effect, can also transmit its reacting force back to tape winding gear 11 which generate a pressed force to the cam 60 till the tape tends to unwind, the tape winding gear 11 will then follow the trend of the pressed force and engage into the cam 60, not untill the link, which substitutes a spring, restores to its free length, it will bring the inclined pole base 30 to retreat.
- the schematic diagram at the tape unwinding position wherein a tape winding torsion spring 111 is not needed to install between the first link 40 and tape loading gear 11 and this first link 40 together with the tape winding gear 11 is an integral pan, what is more, the second link 400 is connected to the first link 40 by the first pivot joint 401; and connected to the buckling type two-joint link 406 to substitute the third link and embedded in the deck's guided slot 101 with the guided pin 403 of the second link.
- the buckling type two-joint link which is connected to the inclined pole base 30 by the third pivot joint will move along the deck's slot 101 by use of the second link's guided pin 403, the third pivot joint 404 and the inclined pole base's guided pin 302 wherein the linear distance from point A on the second pivot joint 402 to point B on the third pivot joint 404 is L.
- the inclined pole 301 is subjected only to the tension of tape 304, wherein the tension has not yet reached the critical force, therefore, is not high enough to produce buckling action to the buckling type two-joint link.
- the reclined pole 301 diverts the tape 304 out from the cassette 305 and winds around onto the dram 303.
- tape winding torsion spring 111 can eliminate the influence of the tape winding torsion spring 111 while it is assembling, and is easy to install and since it has only two layers in structure it can save spaces and can assemble very quickly. Furthermore, as it does not use tape winding torsion spring 111 anymore, the first link 20 and tape winding gear 11 rotate synchronously and there is no relative motion occurred, thereby the two parts can be formed into an integral one to become a single pan which make the assembly work much easier.
- FIG. 8 the schematic diagram at the tape unwinding position of the embodiment example 2 of the present invention wherein the third link is a torsion type two-joint link 407 having spring effect
- FIG. 9 the schematic diagram at the tape winding position of the embodiment example 2 of the present invention wherein the torsion type two-joint link 407 which substitute the third link, is connected to the second link's guided pin 403 by the helix part 405 of the spring and this guided pin 403 is embedded in the cleck's guided slot 101.
- the torsion spring type two-joint link 407 is not subjected to a force action and is in an unloaded free state until the tape winding mode is finished, the inclined pole base 30 then presses against the V-slot on the drum base 100 without any movement, but the tape winding gear 11 still keeps on rotating an ⁇ degree; the first and second pivot joint 401 and 402 thereby are subjected to a force action and are keeping on rotating, thereby, the torsion spring type two-joint link 407 is compressed and creating a reacting force to make the inclined pole base 30 press against the drum base 100; in the mean time, the torsion spring type two-joint link 407 also transmits the reacting force to the tape winding gear 11 which creates an pressed force to the cam 60; the tape winding gear 11 then make use of this pressed force and follows the trend to engage into the cam 60 untill the torsion spring type two-joint link 407
- FIG. 10 and FIG. 11 are the schematic diagram at the tape unwinding and winding position of the embodiment example 3 of the present invention wherein they use a compressing spring type two-joint link 408 to substitute the traditional third link; when the linkage moves from tape unwinding position to tape winding position; the compressing spring type two-joint link 408 is not subjected to force actition and its length is a free length.
- the inclined pole base 30 reaches the tape winding position and touches the drum base 100, that is, the tape winding mode is finished, the inclined base 30 will not move anymore but the tape winding gear 11 keeps on rotating a ⁇ angle which make the compressing spring type two-joint link 408 to be compressed, and the compressive action will create a reacting force which results in creating a predetermined tight pressing force between the inclined pole base 30 and drum base 100.
- the embodiment example 4 of the present invention wherein the buckling type two-joint link 408 can not only substitute the traditional third link but also substitute the second link, the principles of action are the same mentioned above.
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Abstract
Description
______________________________________ Designation in the Drawings ______________________________________ 10Deck 305Cassette 100Drum base 306Guided wheel positioner 101 Deck guidedslot 307 Inclinedpole base positioner 11Tape winding gear 40 Thefirst link 111Tape winding torsion 400 Thesecond link spring 401 Thefirst pivot joint 112Gear shaft 402 Thesecond pivot joint 20 The first link 403 The second link's guidedpin 201 Thefirst pivot joint 404 Thethird pivot joint 202 The second link 405 The screw part of thespring 203 Thesecond pivot joint 406 Buckling type two-joint link 204 Thethird link 407Torsion spring 205 Thethird pivot joint 408Compression spring 30 Inclinedpole base 50Motor 301 Inclinedpole 501Gear train 302 Inclined pole base 60 Cam guidedpin 303Drum 304 Tape ______________________________________
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/493,291 US5597130A (en) | 1995-06-21 | 1995-06-21 | Tape winding linkage of drum type magnetic recording and reproducing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/493,291 US5597130A (en) | 1995-06-21 | 1995-06-21 | Tape winding linkage of drum type magnetic recording and reproducing apparatus |
Publications (1)
Publication Number | Publication Date |
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US5597130A true US5597130A (en) | 1997-01-28 |
Family
ID=23959635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US08/493,291 Expired - Lifetime US5597130A (en) | 1995-06-21 | 1995-06-21 | Tape winding linkage of drum type magnetic recording and reproducing apparatus |
Country Status (1)
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US (1) | US5597130A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2320798A (en) * | 1996-12-30 | 1998-07-01 | Daewoo Electronics Co Ltd | Video tape loading apparatus |
EP1400965A2 (en) * | 2002-09-16 | 2004-03-24 | Samsung Electronics Co., Ltd. | Cassette tape deck |
US20040125499A1 (en) * | 2002-12-30 | 2004-07-01 | Kim Bong-Joo | Pole base assembly driving device for tape recorder |
US20040184182A1 (en) * | 2003-01-22 | 2004-09-23 | Sung-Pyo Hong | Loading gear supporting apparatus of video cassette recorder |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3355119A (en) * | 1965-06-23 | 1967-11-28 | Ampex | Capstan and wind drive and activation mechanism therefor |
JPS5611644A (en) * | 1979-07-06 | 1981-02-05 | Hitachi Ltd | Rack unit using flexible rack |
US4616274A (en) * | 1982-03-01 | 1986-10-07 | Victor Company Of Japan, Ltd. | Tape end detecting device for extractable tape type cassette |
US4868693A (en) * | 1987-02-09 | 1989-09-19 | Yamaha Corporation | Magnetic recording and/or reproducing apparatus |
US5025333A (en) * | 1990-04-12 | 1991-06-18 | R-Byte, Inc. | Tape engagement mechanism for magnetic cassette tape |
US5128814A (en) * | 1989-04-28 | 1992-07-07 | Mitsubishi Denki Kabushiki Kaisha | Tap loading apparatus including a pinch roller moving apparatus |
US5262909A (en) * | 1991-11-12 | 1993-11-16 | Industrial Technology Research Institute | Tape loading device for a magnetic tape recording and/or reproducing apparatus |
-
1995
- 1995-06-21 US US08/493,291 patent/US5597130A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3355119A (en) * | 1965-06-23 | 1967-11-28 | Ampex | Capstan and wind drive and activation mechanism therefor |
JPS5611644A (en) * | 1979-07-06 | 1981-02-05 | Hitachi Ltd | Rack unit using flexible rack |
US4616274A (en) * | 1982-03-01 | 1986-10-07 | Victor Company Of Japan, Ltd. | Tape end detecting device for extractable tape type cassette |
US4868693A (en) * | 1987-02-09 | 1989-09-19 | Yamaha Corporation | Magnetic recording and/or reproducing apparatus |
US5128814A (en) * | 1989-04-28 | 1992-07-07 | Mitsubishi Denki Kabushiki Kaisha | Tap loading apparatus including a pinch roller moving apparatus |
US5025333A (en) * | 1990-04-12 | 1991-06-18 | R-Byte, Inc. | Tape engagement mechanism for magnetic cassette tape |
US5262909A (en) * | 1991-11-12 | 1993-11-16 | Industrial Technology Research Institute | Tape loading device for a magnetic tape recording and/or reproducing apparatus |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2320798A (en) * | 1996-12-30 | 1998-07-01 | Daewoo Electronics Co Ltd | Video tape loading apparatus |
US5982575A (en) * | 1996-12-30 | 1999-11-09 | Daewood Electronics Co. Ltd. | Tape loading apparatus with a pair of link devices having deformable bent portions |
GB2320798B (en) * | 1996-12-30 | 2001-01-10 | Daewoo Electronics Co Ltd | Video cassette recorder equipped with a tape loading apparatus |
EP1400965A2 (en) * | 2002-09-16 | 2004-03-24 | Samsung Electronics Co., Ltd. | Cassette tape deck |
EP1400965A3 (en) * | 2002-10-12 | 2007-02-28 | Samsung Electronics Co., Ltd. | Cassette tape deck |
US20040125499A1 (en) * | 2002-12-30 | 2004-07-01 | Kim Bong-Joo | Pole base assembly driving device for tape recorder |
EP1435614A2 (en) * | 2002-12-30 | 2004-07-07 | Samsung Electronics Co., Ltd. | Tape-deck with resiliently deformable pole base loading arms |
US7133246B2 (en) | 2002-12-30 | 2006-11-07 | Samsung Electronic Co., Ltd. | Pole base assembly driving device for tape recorder |
EP1435614A3 (en) * | 2002-12-30 | 2007-01-24 | Samsung Electronics Co., Ltd. | Tape-deck with resiliently deformable pole base loading arms |
US20040184182A1 (en) * | 2003-01-22 | 2004-09-23 | Sung-Pyo Hong | Loading gear supporting apparatus of video cassette recorder |
US7256958B2 (en) * | 2003-01-22 | 2007-08-14 | Lg Electronics Inc. | Loading gear supporting apparatus of video cassette recorder |
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